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authorHaavard Skinnemoen <hskinnemoen@atmel.com>2007-07-21 04:38:02 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-07-21 17:49:17 -0700
commit4440e0e11d2e9eb13e6edf44f89019e4f8a4dd58 (patch)
tree1a65068383672dfb34f04bc5a190d1dbfea64eac /drivers/video/atmel_lcdfb.c
parent7cc90249ff0e21c526532ce5b5ba35c07c8b8389 (diff)
downloadop-kernel-dev-4440e0e11d2e9eb13e6edf44f89019e4f8a4dd58.zip
op-kernel-dev-4440e0e11d2e9eb13e6edf44f89019e4f8a4dd58.tar.gz
atmel_lcdfb: use spare bits in 32bpp mode as alpha channel
Set var->transp.offset and var->transp.length in 32bpp mode to indicate that the 8 otherwise unused bits can be used for transparency. Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com> Signed-off-by: Nicolas Ferre <nicolas.ferre@rfo.atmel.com> Cc: "Antonino A. Daplas" <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/video/atmel_lcdfb.c')
-rw-r--r--drivers/video/atmel_lcdfb.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/video/atmel_lcdfb.c b/drivers/video/atmel_lcdfb.c
index 69ec93c..235b618 100644
--- a/drivers/video/atmel_lcdfb.c
+++ b/drivers/video/atmel_lcdfb.c
@@ -219,8 +219,11 @@ static int atmel_lcdfb_check_var(struct fb_var_screeninfo *var,
var->blue.offset = 10;
var->red.length = var->green.length = var->blue.length = 5;
break;
- case 24:
case 32:
+ var->transp.offset = 24;
+ var->transp.length = 8;
+ /* fall through */
+ case 24:
var->red.offset = 0;
var->green.offset = 8;
var->blue.offset = 16;
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